Response time

t90 (s) from zero to 20ppm H2S

< 25

Zero current

ppm equivalent in zero air

< ±1

Resolution

RMS noise (ppm equivalent)

< 0.2

Range

ppm H2S limit of performance warranty

100

Linearity

ppm error at full scale, linear at zero and 20ppm H2S

< ±6

Overgas limit

maximum ppm for stable response to gas pulse

200

H2S-D4 Hydrogen Sulfide Sensor (H2S Sensor) LIFETIME

Zero drift

ppm equivalent change/year in lab air

< 0.2

Sensitivity drift

% change/year in lab air, monthly test

< 3

Operating life

months until 80% original signal(24 month warranted)

> 24

Sensitivity @ -20°C

% (output @ -20°C/output @ 20°C) @ 20ppm

75 to 90

Sensitivity @ 50°C

% (output @ 50°C/output @ 20°C) @ 20ppm

103 to 112

Zero @ -20°C

ppm equivalent change from20°C

< -0.3 to 0.2

Zero @ 50°C

ppm equivalent change from 20°C

< ±1

H2S-D4 Hydrogen Sulfide Sensor (H2S Sensor) CROSS SENSITIVITY

NO2 sensitivity

 % measured gas @ 10ppm NO2

< -25

Cl2 sensitivity

 % measured gas @ 10ppm Cl2

< -25

NO sensitivity

% measured gas @ 50ppm NO

< 12

SO2 sensitivity

% measured gas @ 20ppm SO2

< 20

CO sensitivity

% measured gas @ 400ppm CO

< 1.5

H2 sensitivity

% measured gas @ 400ppm H2

< 1

C2H4 sensitivity

% measured gas @ 400ppm C2H4

< 0.1

NH3 sensitivity

% measured gas @ 20ppm NH3

< 0.1

H2S-D4 Hydrogen Sulfide Sensor (H2S Sensor) KEY SPECIFICATIONS

Temperature range

°C

-30 to 50

Pressure range

kPa

80 to 120

Humidity range

%rh (see note below)

15 to 90

Storage period

months @ 3 to 20°C (stored in sealed pot)

6

Load resistor

Ω (recommended)

10 to 47

Weight

g

< 2